Access thousands of lectures and other course materials from one of the best universities in America. Be sure to check out the introductory physics lectures from Walter Lewin.
Salman Khan is a fund manager, engineer, and mathematician who started Khan Academy to "provide a free, world-class education to anyone, anywhere." He has made over 1000 videos covering topics in math and science at the high school and college levels. These short videos, in which Khan speaks while drawing on a black background, have been appreciated by students around the world.
"Based on scores obtained from tens of thousands of adults and teens, Dr. Epstein recently concluded that many teens are as competent or more competent than adults—and that adults greatly underestimate the abilities of teens. Epstein and Dumas have also demonstrated a link between "infantilization"—the extent to which teens are treated like children—and behavioral problems in teens."
Here is a great free online goal-setting program. You set up core values, link them to goals and add specific benchmarks under each goal, complete with email reminders. A pay upgrade to more features is available.